How can I send message to specific contact through WhatsApp from my android app?

Question

I am developing an android app and I need to send a message to specific contact from WhatsApp. I tried this code:

Uri mUri = Uri.parse(\"smsto:+999999999\");         


        

Answer 1

I found the right way to do this and is just simple after you read this article: http://howdygeeks.com/send-whatsapp-message-unsaved-number-android/

phone and message are both String.

Source code:

try {

    PackageManager packageManager = context.getPackageManager();
    Intent i = new Intent(Intent.ACTION_VIEW);

    String url = "https://api.whatsapp.com/send?phone="+ phone +"&text=" + URLEncoder.encode(message, "UTF-8");
    i.setPackage("com.whatsapp");
    i.setData(Uri.parse(url));
    if (i.resolveActivity(packageManager) != null) {
        context.startActivity(i);
    }
} catch (Exception e){
    e.printStackTrace();
}

Enjoy!